Vogt, Elwood W., author.
Ann Arbor, Michigan : Environmental Protection Agency, Office of Air Programs, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, Standards Development and Support Branch, 1975.
1975
Barth, Edward Anthony, author.
[Ann Arbor, Mich.] : Test and Evaluation Branch, Emission Control Technology Division, Office of Mobile Source Air Pollution Control, Environmental Protection Agency, 1981.
1981